Defensive publication

ABSTRACT

HOT MELT ADHESIVE COMPOSITIONS COMPRISE A THERMOPLASTIC COMPONENT AND A TACKIFIER COMPRISING HYDROGENATED AROMATIC HYDROCARBON PETROLEUM RESINS. THE THERMOPLASTIC COMPONENT CAN BE LOW MOLECULAR WEIGHT POLYETHYLENE, AMORPHOUS POLYPROPYLENE, PARAFFINWAX, STYRENE-BUTADIENE COPOLYMERS, STYRENE-ISOPRENE-STYRENE BLOCK COPOLYMERS, POLYVINYL ACETATE, AND IS PREFERABLY AN ETHYLENE-VINYL ACETATE COPOLYMER. THE HYDROGENATED AROMATIC HYDROCARBON PETROLEUM RESINS USED AS THE TACKIFIER ARE DERIVED FROM POLYMERIZED CRACKED NAPHTHA FRACTIONS BOILING IN THE RANGE OF FROM ABOUT -10*C. TO ABOUT 280*C. AND CONTAINING POLYMERIZABLE UNSATURATED HYDROCARBON OF WHICH AT LEAST 50% BY WEIGHT CONSISTS OF A MIXTURE OF AROMATIC OLEFINS, CYCLIC OLEFINS AND CYCLIC DIOLEFINS. HOT MELT ADHESIVES ARE USED TO BOND WOOD, PAPER, PLASTICS, TEXTILES, ETC.

PUBLICATION UNITED STATES PATENT OFFICE Published at the request of theapplicant or owner in accordance with the Notice of Dec. 16, 1969. 8690.6. 687. The abstracts of Defensive Publication applications areidentified by distinctly numbered series and are arrangedchronologically. The heading of each abstract indicates the number ofpages of specification, including claims and sheets of drawingscontained in the application as originally filed. The files of theseapplications are available to the public for inspection and reproductionmay be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits o1 alleged invention. The Patent Oihce makes no assertion as tothe novelty o! the disclosed subject matter.

PUBLISHED DECEMBER 4, 1973 T917,008 HOT MELT ADHESIVE CONTAINING HYDRO-GENATED AROMATIC HYDROCARBON RESIN TACKIFIER Robert G. Fajans, Newark,Del., assignor to Hercules Incorporated, Wilmington, De]. Filed Mar. 9,1973, Ser. No. 339,693 Int. Cl. C08f 29/12 U.S. Cl. 260-285 A NoDrawing. 8 Pages Specification Hot melt adhesive compositions comprise athermoplastic component and a tackifier comprising hydrogenated aromatichydrocarbon petroleum resins. The thermoplastic component can be lowmolecular Weight polyethylene, amorphous polypropylene, paraffin wax,styrene-butadicne copolymers, styrene-isoprene-styrene block copolymers,polyvinyl acetate, and is preferably an ethylene-vinyl acetatecopolymcr.

The hydrogenated aromatic hydrocarbon petroleum resins used as thetackifier are derived from polymerized cracked naphtha fractions boilingin the range of from about 10 C. to about 280 C. and containingpolymerizable unsaturated hydrocarbons of which at least 50% by weightconsists of a mixture of aromatic olefins, cyclic olefins and cyclicdiolefins.

Hot melt adhesives are used to bond wood, paper, plastics, textiles,etc.

